Even more, when I click "Save and stay" after editing emial template for my theme, the page is reloading with "modern" email templates, not with classic which are in use currently in my shop. I can't believe that any software could have so many bugs in production. I can't believe it!
Page is reloading with
&theme
url param instead of
&selected-theme
Prestashop guys are doing it in purpose or what?